Ureteral stents placed for ureteral stenosis are usually not permanent and need to be removed or replaced after a certain period of time in order to avoid localized formation of stones blocking the ureter or infections.
After ureteral stenosis surgery or endoscopic surgery, the purpose of endoluminal ureteral stenting is to support the ureter, promote ureteral healing, prevent urine extravasation, avoid restenosis, and remove the ureteral stent after the ureter completes its own structural remodeling and functional reconstruction in order to increase the healing rate of the surgery. Most of the studies for the need to stay 2 to 3 months, without the need for permanent retention.
For those who cannot be completely clinically cured and need to perform long-term maintenance treatment with stent, due to the long-term placement of the stent, there may be pain, urinary frequency, urinary urgency, urinary incontinence, re-stenosis of urinary difficulties and other manifestations, and may even be infected, need to be replaced after a period of time, and can not be permanently stored in the body.
With the development of technology, new types of stents have been reported in the clinical literature, but there are no clinical reports of long-term application. Whether long-term stents are needed requires comprehensive judgment by clinicians.